In the second result of our February survey of Tory members (first here) 40% of Tory members say that it’s too early to say if Boris Johnson has the qualities to be PM. The exact wording was: "Do you see Boris Johnson as a credible candidate to be Prime Minister after he has served as London Mayor?".

Of those who have decided, however, a clear majority are sceptical. Over 70% say no. Most of the polling was carried out before reporting of Boris Johnson’s F-word outburst.

Overall, 89% of Tory members are satisfied with the Mayor’s performance and just 5% dissatisfied.